Today I has situation when I must change project manage from standard Eclipse java project to maven project. Because I didn’t want to change directory structure so I create pom.xml and add code like this:

Listing 1. additional code in pom.xml

<build>
	<sourceDirectory>src/</sourceDirectory>
</build>

So. Because I can add target directory to svn:ignore I need only this one additional line in my pom.xml.
You should remember that maven use Convention Over Configuration principle but You can reconfigure all parameters if You want.